Assiglfoe of ojste-half to otto c



(No Model.)

L. SENIOR.

SAFETY ATTACHMENT FOR ELEVATORS.

Patented Apr. 6, 1886.

Affarneys WITNESSES llnrrno 85mins Arena 7 Orrron.

LUKE SENIOR, OF CLEVELAND, OHIO, ASSIGNOR OF ONEHALF TO OTTO O. BEROHTOLD, OF SAME PLACE.

SAFETY ATTACHMENT Foe ELEVATORS.

SPECIFICATION forming part of Letters Patent N0. 339,4:84, dated April 6, 1886. Application filed December 26, 1385. Serial No. 186,729. (No modcLl To all whom it may concern:

to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use in the same.

My invention relates to improvements in safety attachments for elevators, in which, on one or more sides of the elevator-platform, a plank is arranged and held suspended in its 1 normal position, so as to be depressible, with suit-able connecting mechanism so arranged that the depression of the said plank, or of either planks, in case there are more than one, will cause the shifting-cable to be gripped or cramped and carried along with the elevator, so as to shift the driving mechanism and stop the elevator, the object being to provide a cheap, simple, and effective device wholly connected with the elevator-platform, but operating at any point along the line of the elevator.

lVith these objects in view my invention consists in certain features of construction and in combination of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of an elevatorplatform with my improvements attached, showing the parts in their normal position. Fig. 2 is a side ele vat-ion showing the position of parts for stopping the elevator. Figs. 3 and 4 are modifications hereinafter described.

A represents the platform of an elevator, to opposite sides of which, at a, are pivoted le- -vers B. To these levers is r gidly attached a plank, B, that extends along the front edge of the platform, the latter being rabbeted out, as at a, to receive the plank.

A weight, 13 is mounted on the rearward end of each lever I5, to counterbalance the plank and hold it slightly elevated from its rabbeted seat on the platform. The weights are secured in the desired position on the levers by set'screws b, and pins 12, projecting from the platform, limit the depression of the weighted ends of the levers, and so arranged that the normal or elevated position of the plank is a trifle above the line of the elevatoriioor; but when the plank is depressed onto its seat it should be level with the platformfloor.

O is a lever, pivoted at c to the edge of the platform and terminating above in a handle,

The lower end of the lever is forked to embrace the shifting cable D. The cable passes loosely through a guide loop or eye, d, that is secured to the platform and located just above the forked end ofthelever 0. Above the fulcrum c a rod, E, is pivoted at e to the lever 0. On this rod is mounted a strong spring, F, arranged to draw the rod E rearward. The extreme rearward end of the rod E has a button or head, 6.

The upper end of the lever G is held forward against the action of the spring by a dog, H, that is pivoted to the lever G at k and hooks over the pin h, that projects from the platform. The forward end, h, of the dog laps over the rear end of the lever B. In the position of parts shown in Fig. 1 the lever 0 does not interfere with the cable D, and the elevator may be operated in the usual manner.

In Fig. 1 a portion of a floor or hatchwayis shown at G, that the head 0 just clears in passing. If there is too much clearance between the head 0 and the hatchway, a block or plate, 9, is secured to the hatchway to fill up the space.

Now, with the position of parts shown in Fig. 1, and with the elevator opposite a floor, G, if the plank B is depressed in taking on or off passengers or freight, the rear end of the lever B would elevate the engaging end of the dog H above the pin h, but the head e cannot move rearward on account of the plate 9, and consequently the rod E- remains stationary, and the lever O is not shifted, and when the plank B is released from a pressure downward it rises, by means of the weights B", to its normal position, and the dog H falls back 95 and engages the pin h. If the plank B is depressed while the elevator is ascending from the hatchn v, such depression being caused, for instance, 5y the shifting of freight or by a passenger inadvertently placing his foot too :00

near the edge of the platform, the dog H is elevated and loosened from the pin h, in which case, there being nothing to engage the head e, the spring F draws the upper end of the lever O rearward, thrusting the'lower forked end of the lever against the cable D and cramping it, as shown in Fig. 2, by means of which the cable is carried along with the elevator until the machinery is shifted, and the elevator stops before reaching the floor above, the machinery for propelling the elevator being arranged in the usual manner, so that the elevator in ascending is stopped by drawing up on the shifting-cable.

As no great harm would be likely to accrue from anything overhanging the elevator during its descent, no provision is made for stopping the downward movement of the elevator excepting the shifting-cable and operator.

In place of the plank Ba plate, bar of metal, or other suitable device might be substituted.

It will be observed that my improved safety attachment is connected entirely with the elevator, and is operative on any number of floors through which the elevator may pass.

Elevators are more frequently arranged to receive freight or passengers on one side only, and the other three sides are usually protected in some manner, so that freight or the feet of pasengers cannot protrude beyond the edge of the platform. In some cases, however, the elevators are arranged with a passengerway on opposite sides, and in such cases these two sides should be provided with planks B and levers B, and the levers B might be made long and arranged to extend past each other, so that either lever would operate the dog H. (See Figs. 4 and 5.) The dog could extend rearward of the lever G, if necessary, and could be of any length necessary to extend to the overlapping ends of the lever B; also, the rod E might be attached to the lever 0 below the fulcrum of the lever, in which case the rod E would extend forward instead of rearward, and the head 6 would engage or pass in close proximity to the front sides of the hatchways. Planks B might be arranged on the four sides of the platform; but I do not see that such arrangement would ever be necessary. These and various other modifications in the mechanical construction may be had without departing from the spirit and purpose of my invention.

What I claim is- 1. In a safety attachment for elevators, a plank or suitable device held suspended and depressible with suitable connecting mechanism, substantially as shown, whereby the depression of the plank causes the elevator to stop.

2. In a safety attachment for elevators, the combination, with an elevator'platform, of a depressible plank or suitable device extending along the front side of the platform and held in its normal position elevated more or less from the platform, substantially as set forth.

3. In a safety attachment for elevators, the combination, with an elevator-platform, and a plank or suitable device arranged along the front side of the platform, of tilting-levers secured to the plank and arranged to hold the plank depressibly elevated more or less from the platform, substantially as set forth.

4. In a safety attachment for elevators, a plank connected with tilting-levers,said plank being held. suspended and depressible, of a spring-actuated I lever for cramping the shifting-cable, adog for holding the cramping-lever against the action of the spring, with the arrangement of parts substantially as described, whereby the dog is released by the depression of the suspended plank.

5. In a safety attachment for elevators, the combination, with a plank held depressibly suspended from its seat on the elevator-platform,of a lever for cramping the shifting-cable, a spring actuated rod connected with the cramping-lever,and a dog for holding the lever against the action of thespring, said springactuated rod having a head that passes in close proximity to the hatchway and arranged substantially as described, whereby, when the elevator is opposite a hatchway, the spring for operating the cramping-lever is held inoperative.

In testimony whereof I sign this specification, in the presence of two witnesses, this 10th day of December, 1885.

LUKE SENIOR.

Witnesses:

CHAS. H. DORER, ALBERT E. LYNCH. 

